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  <title>Initiates a connection on a socket</title>

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</div><hr /><div id="function.socket-connect" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">socket_connect</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.1.0, PHP 5)</p><p class="refpurpose"><span class="refname">socket_connect</span> &mdash; <span class="dc-title">Initiates a connection on a socket</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.socket-connect-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>socket_connect</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$socket</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$address</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$port</code><span class="initializer"> = 0</span></span>
  ] )</div>

  <p class="para rdfs-comment">
   Initiate a connection to <em><code class="parameter">address</code></em> using the socket resource
   <em><code class="parameter">socket</code></em>, which must be a valid socket
   resource created with <span class="function"><a href="function.socket-create.html" class="function">socket_create()</a></span>.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.socket-connect-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">socket</code></em></dt>

     <dd>

      <p class="para">
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">address</code></em></dt>

     <dd>

      <p class="para">
       The <em><code class="parameter">address</code></em> parameter is either an IPv4 address
       in dotted-quad notation (e.g. <em>127.0.0.1</em>) if 
       <em><code class="parameter">socket</code></em> is <strong><code>AF_INET</code></strong>, a valid 
       IPv6 address (e.g. <em>::1</em>) if IPv6 support is enabled and 
       <em><code class="parameter">socket</code></em> is <strong><code>AF_INET6</code></strong>
       or the pathname of a Unix domain socket, if the socket family is
       <strong><code>AF_UNIX</code></strong>.
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">port</code></em></dt>

     <dd>

      <p class="para">
       The <em><code class="parameter">port</code></em> parameter is only used and is mandatory
       when connecting to an <strong><code>AF_INET</code></strong> or an 
       <strong><code>AF_INET6</code></strong> socket, and designates
       the port on the remote host to which a connection should be made.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.socket-connect-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。 The error code can be retrieved with
   <span class="function"><a href="function.socket-last-error.html" class="function">socket_last_error()</a></span>. This code may be passed to
   <span class="function"><a href="function.socket-strerror.html" class="function">socket_strerror()</a></span> to get a textual explanation of the
   error.
  </p>
  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <p class="para">
    If the socket is non-blocking then this function returns <strong><code>FALSE</code></strong> with an
    error <em>Operation now in progress</em>.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.socket-connect-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.socket-bind.html" class="function" rel="rdfs-seeAlso">socket_bind()</a> - Binds a name to a socket</span></li>
    <li class="member"><span class="function"><a href="function.socket-listen.html" class="function" rel="rdfs-seeAlso">socket_listen()</a> - Listens for a connection on a socket</span></li>
    <li class="member"><span class="function"><a href="function.socket-create.html" class="function" rel="rdfs-seeAlso">socket_create()</a> - 创建一个套接字（通讯节点）</span></li>
    <li class="member"><span class="function"><a href="function.socket-last-error.html" class="function" rel="rdfs-seeAlso">socket_last_error()</a> - Returns the last error on the socket</span></li>
    <li class="member"><span class="function"><a href="function.socket-strerror.html" class="function" rel="rdfs-seeAlso">socket_strerror()</a> - Return a string describing a socket error</span></li>
   </ul>
  </p>
 </div>


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